For Gem Enthusiasts

A traditional favorite, a ruby engagement ring stone symbolizes love and passion. Learn how to find the gem that best fits your budget and style.…

Streak testing is a destructive gemstone test rarely used by gemologists. Most gems leave no streak. Learn which gems do and what colors they leave.…

Richard Hughes has been a leading ruby expert for decades. Learn how he got started and his tips for newcomers to the world of rubies.

Transparent mimetite crystals are extremely rare, and very few have ever been faceted. Cabochons with rich orange and yellow colors have been…

Appraising blue sapphires is a critical skill for any jeweler or gemologist. Learn the basics you’ll need to evaluate one of the most popular…

How does faceting affect gem value? Custom-cut gemstones are unique pieces and command a high price. Learn how custom cutting compares to factory…